Automatic pencil



Sept. 8, 1925.

A. DAVOUST AUTOMATIC PENCIL 2 'Sheets-Sheet 1 Sept.. s, 1925. K1,552,682

' A. DAVOUST AUTOMATIC PENCIL Filed Oct. 3 1924 2 Sheets-Sheet 2 @en 3M/fTTDfv/sy:

lmatented Sept. 8, 1925.

ALBERT 'navousnfo :B'cis'r'cilli7 MASSACHUSETTS;

-AUTOMATIC 'PENCIL Application fl'edio'c'toli'r 3, 1924. Serial N0.741,379.

To alla/7mm it lmay conce/m:

'Be it known that I, ALBERT DAVo'Us'r, a citizen of the Republic otFrance, and 'a resident of Boston, in 'the'countyof Suffolk and IStateof Massachusetts, have invented lafnewand useful mprovement in AutomaticPencils, of which :the following' is a 'speciiication. Y

My invention relates to aut-onlatic pencils, and its object,'generally'speaking, is to :improve and simplify the construction "otpencils lof `this type in 'the'nianner herein- 'after more fully `setforth. y

Specific objects of inyjinventi'o'n airejto provide an automatic pencilin which leads of ditlerent grades 'or colors may be placed in the'pencil point from a rotatable 'inagaZine, and replaced 'in Isaidmagazine when itis desired to'use a-"lead o't different grade or color;and to 'pro-vide a simple means for feeding the lead through the pencilpoint.

lilith the 'foregoing objects 'in view 'my invention comprises asits'essential features a barrel having a transverse slot, a pointsecured, to one end of'said barrel 'and having an axial borecommunicating with said slot, a'cap engaging theot'lier end of saidpencil, a maga-zine rotatably mounted 'in said barrel, an interiorly'threaded Asleeve rotatably mounted on said valve, and -a pusher-rodprovided with a raekadapted to engage Vthe threads'on theinteriorsu'rgtace of the sleeve, together with means for "holding thesaid pusher-rod in inoperative position and releasing it to operativeposition.

n illustrative embodiment'of my inven# tion is Ashown in the drawingswhich accompany, and form a part of this specification yin which-dFigure l is a longitudinal vertical section taken on the line 1-1 ofFig. 2;

Fig. 2 is 'asimilar section taken o'n the line 2;2 of Fig. 1; y

Fig. 3 is a longitudinal vertical section 'of the interior'ly threadedsleeve rotatably mounted on the barrel;

Fig. 4 is a. transverse section taken on the line 4-4 of Fig. 3;

Fig. 5 is a transverse section taken on the line 5 5 of Fig. 2; 1

Fig. 6 is a transverse section taken on the line 6*(5 of Fig. 2;

Fig. 7 is a transverse section taken on the line 7-.7 of Fig. 2;

Fig. 8 is a transverse section taken on the line A8*.8 0f Fie,- 2;

elevation 'oet said .pusherrod.

In the particular Vdrawingsv 'selected :for 4 more tfully disclosingin'y invention 20 is la barrel provided with a transverse slot 2lextending from a 'point near the upper` end of the barrel to apoii'i't'near the flower end thereof, and provided fa't'its lower endwith 'an axial vbore 2 2 communicating with 'the b'oreQS 'arrangedaXi'ally in the point 24 which has threaded 'engagement 'with Athe lowerend of saidbar're'l.. Rot-atably 'mount ed "on `:the reduced low'erypar't 25 of the barrel is an interiorly threaded sleeve 26 confinedbetween'the point 24 and the larger upper portion of said barrel. Y Y

The "slot'21 extends transversely through the 'r'ecvluced'end portionofthe barrel as iindicated in Fig. 8. Rotatably mounted in the enlargedupper portion of the barrel is a vlead maga-'Zine 26 herein shownasfhavin'g tive compartments for Vleads of different colors or'different 'grades,1said 'magazine bef ing .provided with a head '27herein sho'vv'ii as circular, the periphery of which extends slightlybeyond 'the cylindrical "cap 28 whieh is held in rict'io'ii'alengagement Awith the upper'end of the barrel,- The barrel may be.provided with 'a Vchamber2911er storing siilrplus leads, although thisvis vnot an essential IJfea-ture of Amy invention.

'F or feeding the leads 'forward through the bo're inthepointQZl, I'prefetto employ a pushersrod 30 arranged for longitudinal' movement inthe slot '21 and 'bore 23, 's'aid pusher-rod being' provided with a`re'ctangular head V3l 'arranged fto 'fit snugly within said 'slot andprovided on its 'outer edges lwith 'a 'rack arranged for 'engagementwith the threads on 'the interior surface 'of the sleeve 26.

Secured tothe vtop 'ot the 'barrel yby the.

screw 32 'olfdther suitable means, is a 'plate spring 33 having a latch34 designed to cooperate with the lower edge of the head 31 so as tohold the pusher-rod in the inclined position shown in Fig. 2, the upperedge of said head being in such case held against the inclined lowersurface of the top 0f the barrel.

Arranged for reciprocal movement in the barrel and cap is a plunger rod35, the upper end of which projects through an aperture in the cap andthe lower part, Which is square in section, through a hole in the upperend of the cap. The lower end of said plunger-rod is beveledas shown at36 and is in contact with the inclined portion of the spring 33, so thatwhen the plunger-rod is depressed, the latch 34 will be moved laterallyand the head of the pusher-rod released therefrom.

The peripheral surface of the head 27 of the magazine will preferablycarry indices denoting the character of the leads, such indicespreferably lbeingV so arranged as lto show the user the character of thelead in the compartment opposite the slot 21. The ycap may be providedwith the usual pocket clip 37 V One operation is as follows p Themagazine head is rotated tov the proper point to bring thecompartmentcarrying the desired lead into register with the slot 21, whereupon thelead38 will ,drop through the slot and into the bore 23. The plunger-rod35 is then depressed to release the pusher-rod which descends throughthe slot untilthe racked head 31 is in engagement with the threads ofthe sleeve 26, whereupon rotation of the latter will cause thepusher-rod to move downwardly and feed the lead through the bore 23l asdesired. Should'it be desired to employ lead of another color or gradebefore the lead in the bore 23 has lbeen used up, the sleeve is rotatedin the opposite sense until the racked head 31y is ,out of engagement-with the threads of the sleeve, whereupon the pencil is inverted, theplunger-rod depressed to move the latch 34: out'of the path of theVpusher-rod head, the plunger rod released so that the spring 33 willlatch the head in normal inoperative position, and then the pencil heldhorizontally with the magazine downward so that the lead '38 will againbe received in its slot and the magazine rotated until the compartmentcontaining the desired lead is in register' with the slot 2l, whereuponthe operation of disengaging the pusher-rod fand feeding the lead`forward,

' as above described, is repeated.

Having vdescribed an illustrative embodiment ofV my invention withouthowever limiting the same thereto, what I claim and desire to secure byLetters Patent is l. An automatic pencil comprising in combination abarrel having a transverse slot,

and an interiorly threaded sleeve rotatablyY mounted on said barrel, thehead of said pusher-rod being provided with a rack arranged forengagementwith the. threadsv on the interior surface of said sleeve. y

2. An automatic pencil comprising in combination a barrel having atransverse slot, a magazine for leads rotatably mounted in said barrel,a point secured to one end of said pencil, said point being providedwith an axial bore communicating with said slot, a cap engaging theotherend of saidV pencil, a pusher-rod provided with a rectangular head, saidpusher-rod being arranged for longitudinal movement in said slot andbore, a spring-latchfor holding the pusher-rod in inoperative position,a plunger-rod projecting through said cap for actuating saidVspring-latch, and an interiorly threaded sleeve rotatably mounted onsaid barrel, the head of said vpusher-rod being provided with a rackarranged for engagement with the threads on the interior surface of saidsleeve.

3. An automatic pencil comprising in combination a barrel having atransverse slot, a magazine for leads rotatably mounted in said barrel,a point secured to one end of said pencil, said point being providedwith an axial bore communicating with said'slot, a `cap engaging theother end of said pencil, said magazine having a head the peripheralsurface of which projects beyond the cylindrical wall of said cap, apusher-rod provided with a rectangular head, said pusherrod beingarranged for-longitudinal movement in said slot and bore, and aninteriorly threadedfsleeve rotatably mounted on said barrel, the head ofsaid pusher-rod beingA provided with a rack arranged for engagement withthe threads on the interior surface of said sleeve. v

In Ytestimony whereof, 1 have hereunto subscribed my name this lst dayof October, 1924i. Y*

n' y ALBERT DAVUUST-,

